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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Soil physicochemical and biological profiles as indicators for Araucaria forest disturbance levels

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Author(s):
Braga Bertini, Simone Cristina [1, 2] ; Stromberger, Mary [3] ; Basilio Azevedo, Lucas Carvalho [1] ; Bran Nogueira Cardoso, Elke Jurandy [2]
Total Authors: 4
Affiliation:
[1] Univ Fed Uberlandia, Inst Ciencias Agr, BR-38410337 Uberlandia, MG - Brazil
[2] Escola Super Agr Luiz de Queiroz ESALQ USP, Dept Ciencia Solo, BR-13418900 Piracicaba - Brazil
[3] Colorado State Univ, Dept Soil & Crop Sci, Ft Collins, CO 80523 - USA
Total Affiliations: 3
Document type: Journal article
Source: APPLIED SOIL ECOLOGY; v. 158, FEB 2021.
Web of Science Citations: 0
Abstract

The Araucaria forest is a sub-type of Atlantic Forest and it is critically endangered because of deforestation. Despite significant researchers' attention, little is known about the microbial and functional soil diversity of this ecosystem. Our aim was to assess structural diversity (phospholipid fatty acid; PLFA), functional diversity (Biolog ecoplates) and physicochemical soil properties to identify which indicators are the most sensitive to alterations in the Araucaria ecosystems. Soils of three different areas (disturbed, reforested, and native Araucaria forest soils), in two parks of Southeast Brazil, were collected in contrasting seasons (dry and rainy). Principal components analysis (PCA) showed that fatty acid profiles, Biolog and physicochemical properties in Araucaria forest soils were more dissimilar between the different park geographic locations than by forest disturbance levels. However, discriminant analysis identified several variables with greater power to discriminate among forest disturbance levels (native, disturbed, and reforested) within each season. Reforested soils were lower in pH, Al+3, and base cation content compared to disturbed and native soils. Soils disturbed by recreational and understory deforestation were sandier in texture and elevated in P compared to native and deforested soils. Native soil microbial communities utilized certain Biolog substrates to a greater extent, depending on season, compared to communities of disturbed and reforested soils. The best discriminating variable among native, disturbed, and reforested soils for both seasons was gamma-hydroxybutyric acid consumption, which was positively related to native, and negatively correlated to disturbed and reforested soils. Thus, gamma-hydroxybutyric acid consumption may be a useful indicator to monitor the recovery of reforested and disturbed Araucaria soils in reference to its native state. (AU)

FAPESP's process: 01/05146-6 - Plant biodiversity and soil organisms associated to natural and disturbed Araucaria angustifolia ecosystems of the State of São Paulo
Grantee:Elke Jurandy Bran Nogueira Cardoso
Support Opportunities: BIOTA-FAPESP Program - Thematic Grants
FAPESP's process: 07/06943-3 - Quality of indicators of the soil in Araucaria forests in São Paulo State
Grantee:Simone Cristina Braga Bertini
Support Opportunities: Scholarships in Brazil - Doctorate